Scrutinizing right-handed neutrino portal dark matter with Yukawa effect

Bandyopadhyay, Priyotosh  (Indian Institute of Technology Hyderabad, Kandi, Sangareddy, Telengana, 502287, India) ; Chun, Eung Jin (Korea Institute for Advanced Study, Seoul, 130-722, Republic of Korea) ; Mandal, Rusa  (The Institute of Mathematical Sciences, HBNI, Taramani, Chennai, 600113, India) (IFIC, Universitat de València-CSIC, Apt. Correus 22085, València, E-46071, Spain) ; Queiroz, Farinaldo S.  (International Institute of Physics, Universidade Federal do Rio Grande do Norte, Campus Universitário, Lagoa Nova, Natal, RN, 59078-970, Brazil)

05 December 2018

Abstract: Analyzing the neutrino Yukawa effect in the freeze-out process of a generic dark matter candidate with right-handed neutrino portal, we identify the parameter regions satisfying the observed dark matter relic density as well as the current Fermi-LAT and H.E.S.S. limits and the future CTA reach on gamma-ray signals. In this scenario the dark matter couples to the Higgs boson at one-loop level and thus could be detected by spin-independent nucleonic scattering for a reasonable range of the relevant parameters.

Published in: Physics letters B 788 (2019) 530-534
Published by: Elsevier
DOI: 10.1016/j.physletb.2018.12.003
License: CC-BY-3.0

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